Gold & Platinum Round Solitaire 4.5mm Center Stone 4-Prong Die Struck Components Grobet USA Half-Round Ring Precision

Grobet USA Half-Round Ring Precision Files — also called Half-Round Slim Files or Half-Round Inside Ring Files — are the best-selling file shape in the jewelry industry

25mm Total Carat Weight Range 7/8 ct – 1 ct (diamond weights) Standard Ring Size 6 (USA) Platinum Alloy 950 Platinum / Ruthenium (95% Pt

7mm–1mm Roller Diameter 50mm Roll Hardness 64 HRC to 6mm depth (induction hardened) Maximum Sheet Thickness Capacity 6mm Maximum Wire Capacity 7mm Gear Ratio 4-to-1 Dimensions 13-1/2″ L × 7-3/4″ W × 12-1/2″ H (345mm × 200mm × 320mm) Net Weight 57 lbs

Reduces magnification while increasing focal length and working distance

The daylight-balanced 6500K fluorescent lighting is designed for detailed

Gold & Platinum Round Solitaire 4.5mm Center Stone 4-Prong Die Struck Components Grobet USA Half-Round Ring PrecisionThese die struck 4 prong round solitaire ring mountings are designed to accept a 4. 5 mm center stone (approximately 3 8 carat) and arrive highly polished and ready for setting and sizing. Made in the USA by America's largest family owned findings manufacturer from responsibly sourced gold and platinum, these mountings meet the standards professional jewelers expect for quality and consistency. Mountings are supplied in standard USA ring sizes 6 to 6